Home / 31,447.35-47,174.10-11,721.30

Finding the Fourth Proportional to 31,447.35, 47,174.10 and 11,721.30

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Solution

The fourth proportional to 31,447.35, 47,174.10 and 11,721.30 is: 17,583.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,447.35 : 47,174.10 = 11,721.30 : x
  2. Step 2: Convert to fraction form
    31,447.35/47,174.10 = 11,721.30/x
  3. Step 3: Cross multiply
    31,447.35x = 47,174.10 × 11,721.30
  4. Step 4: Simplify right side
    31,447.35x = 552,941,557.47
  5. Step 5: Solve for x
    x = 552,941,557.47/31,447.35
  6. Step 6: Final answer
    x = 17,583.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.